Looking for a way to automate the conversion of 100+ fb2 books (in subdirectories) into .rb format for my wifes reb1100. I would like to keep the chapter structure and if at all possible the cover images as well. Is there a command line way to force book designer to do this?

HELP!

Well, since you're wanting something from the command line you can use fb2html (http://pybookreader.narod.ru/fb2html.py.gz) to convert FB2 to HTML and then use rbmake (http://rbmake.sourceforge.net) to convert the HTML to RB. If you're on Windows, you'll need Python (http://python.org/download/), Python libxml/libxslt bindings (http://users.skynet.be/sbi/libxml-python/), and the rbmake binaries (http://sourceforge.net/project/platformdownload.php?group_id=10950&sel_platform=227).